Discover the CRT 100A 200A Automatic Switch Tester, a high-precision Three Phase Loop Contact Resistance Testing Equipment designed for circuit breakers and high-current cable contacts. Compliant with IEC62271, this tester offers 100A, 200A, 400A, and 600A options, with results printable via integrated micro-printer or uploadable to PC for MS WORD conversion. Perfect for professionals in international trade and export.